Analysis of TEDA on ASC-Whetlerite Charcoal
Abstract
In the course of research and development on charcoal, chemical impregnants were incorporated onto charcoal surfaces to afford better protection against some chemical warfare (CW) agents. The use of copper, chromium, and silver as charcoal impregnants (the 'ASC' in ASC-whetlerite) originated in 1942 (1) and is still regarded as the best available multi-purpose adsorbent for military air filters. However, recent studies on the health hazards of tri- and hexavalent chromium (2) have demonstrated that they are both cancer-inducing agents. Although the absorption of chromium (VI) by the lungs after inhaling charcoal dust from testing a military canister containing ASC-whetlerite is not sufficient to cause any harm (2), it is desirable that the percentage of chromium (VI) in ASC-whetlerite be reduced, if not completely removed. In support of this increased interest in TEDA impregnated charcoal it has become apparent that there is a need for an accurate analytical method which allows accurate TEDA determinations. This technical note describes a method which achieves this goal.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1987
- Accession Number
- ADA192035
Entities
People
- Brian H. Harrison
- Jack G. Pagotto
- Septimus H. Liang
Organizations
- Defence Research and Development Canada